// 学生
typedef struct student {
  int no;         // 学号
  char name[36];  // 姓名
  char gender[8]; // 性别
  int grade;      // 成绩
} Student;


/// @brief 
/// @return 
Student *newStudent();


/// @brief 获取学生编号
/// @param student 
int getStudentNo(void * student);

/// @brief 打印
/// @param student 
void printStudent(void * student);

/// @brief 释放空间
/// @param student 
void freeStudent(void * student);